Monarch Instrument F2A3X - Manual (Page 5)

8 Nov 26 2012 AJW Rev 0.92
7 Ordering Information
8 Appendix A - Serial Programming Commands
All serial commands are @ then two or more characters or words separated by a delimiter “/”.
One or two numbers follow some commands. All valid commands respond immediately with an
“OK” or data, or “ERR” if incorrect. Default Baud rate is 9600. Communication requires the User
Programming Cable.
@PI
Product Information, Shows Product name \n Firmware revision \n
@C1 Show all settings
@D0 Send current display value once
@D1 Send display data continuously (at up to display update rate)
@D2 Stop sending data
@MX Send Max reading
@MN
Send Min reading
@R1 Reset Alarm Condition
@RE 32 Reset Max
@RE 64 Reset Min
@RE 96 Reset Max and Min
@CH_A/TYPE
Will show current type
@CH_A/TYPE = RPM Sets scale to 60 so displays in RPM.
@CH_A/TYPE = FREQ Sets scale to 1 so displays in hertz.
@CH_A/TYPE = SCALE Scale mode. Enter Scale factor.
@CH_A/TYPE/SCALE =30.00 This will sets the SCALE factor to 30.00
@CH_A/INPUT Show Sense of trigger input
@CH_A/INPUT =POS (or NEG) Sets the sense of the input trigger
@CH_A/LOEND Set how long (in secs) with no pulses before the unit outputs 0.
@CH_A/LOEND =12 (or 1_SEC, HALF) Set low end time. This allows a min reading of 5RPM, 60
RPM, or 120 RPM.
@CH_A/GATE
Show Gate Speed. (Default is 12)
@CH_A/GATE =STD (1/100 Second) or FAST (1/1000 second). Set Gate Speed (Default is 1/100)
@DECPT
Show the number of decimal places displayed
@DECPT = NONE, 1, 2, or 3 Set the maximum number of decimal places.
@DAC1/ FSCAL Show Analog Out Full Scale
5 Nov 26 2012 AJW Rev 0.92
2.1.2. Analog Out
The Analog Output from the unit is connected to the 4 way terminal block marked
ANALOG OUT POWER IN. Refer to Figure 2.1 above – Right Side view. The Analog Out
are the two left hand terminals and source fthe voltage or current output as ordered.
These terminals are polarity sensitive and are marked - and + accordingly.
NOTE: The ANALOG OUTPUT COMMON is isolated from the other COM connections.
The ANALOG OUT is an OUTPUT. DO NOT CONNECT THE DC POWER TO THESE
TERMINALS.
The Full scale output settings be set by the User using the PMRemote software..
2.1.2.1.Current Output Option
The current output is isolated 4 to 20 mA. This output is a current source and has
a 10 Vdc internal compliance voltage. The maximum load that may be connected
is 450 ohms.
Typical connections are as follows: (Shown right)
Connections for current out are to the terminals marked
ANALOG OUT. Connect the Positive side of the load to the
terminal marked + and the other side of the load to the
terminal marked -.
2.1.2.2. Voltage Output Option
The voltage output is isolated 0 to 5 Vdc.
Connections for voltage out are to the terminals marked
ANALOG OUT. Connect the positive side of the load to the terminal marked + and
the negative or common side of the load to the terminal marked -.
2.1.3.
Sensor Input
The SENSOR INPUT is part of the 4 way terminal block marked SENSOR. Refer to
Figure 2.1 above – Left Side view. Note that these inputs are polarity sensitive. The
SENSOR INPUT is the input terminal used to connect an external sensor or trigger
source. There is a voltage output that may be used to power an external sensor (5 or
10 Vdc as ordered ). The system supports two wire inputs (Signal and common) or
three wire sensors (Supply, signal and common). Three wire sensors can be open
collector types – NPN or PNP, TTL output or negative output types.
Connections and their functions are as follows:
VS
Positive +5 or +10 Vdc (as ordered) to provide power to optical, laser,
infrared or amplified magnetic sensors. Maximum load is 75 mA dc.
IN Input signal from signal sources or speed sensor. Accepts TTL pulses or ac
signals, unipolar and bipolar, from +3 to +12 Volts. Connect the signal wire
from three wire sensors or the signal of two wire sources to this terminal.
Typical input impedance is 10 Kohms.
COM Common or Negative connection for both signal and power from most
sensors/sources.